Lid retainer mechanism for automatic washer

• US 4,947,516 A
• Filed: 10/05/1988
• Issued: 08/14/1990
• Est. Priority Date: 10/05/1988
• Status: Expired due to Term

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Gartley, William H., Kretchman, Gerald L.
• Primary Examiner(s): Seidel, Richard K.
• Assistant Examiner(s): Cuda, Carmine
• Application Number:
  US07/253,600
• Time in Patent Office: 678 Days
• Field of Search: 16/289, 16/290, 16/291, 16/293
• US Class Current: 16/289
• CPC Class Codes: D06F 39/14 Doors or covers; Securing means therefor
• CPC Class Codes: E05F 1/1058 for counterbalancing
• CPC Class Codes: E05F 1/14 with double-acting springs, e.g. for closing and opening or checking and closing no material
• CPC Class Codes: E05Y 2900/312 for washing machines

Abstract

A lid retainer mechanism is provided for an automatic washer which comprises an over-center spring device connected between the lid and the washer cabinet. As the lid is opened, the mechanism passes through a "centered" position and beyond that point, the mechanism acts to urge the lid into a fully open position. This mechanism is particularly useful in a stacked washer/dryer arrangement where the lid is prevented by the bottom wall of the dryer from opening to a position perpendicular to the top of the washer.

Claims

1. A combination washer/dryer wherein a dryer unit is positioned above a washer unit, a pivotal lid, having a free front edge, being attached to the washer unit and pivotable about a first axis toward the dryer unit, a dryer cabinet having an angled panel below said dryer facing said pivotable lid and a lid retainer mechanism, said lid retainer mechanism comprising:

an expandable member comprising two parts nested together, each of said two parts having an open end and a closed end, and being nested together at said open ends to form an expandable closed member, said member being pivotally connected at a first end to said lid to pivot about a second axis, a second end of said member being pivotally and slidably received in an aperture in said cabinet;

a biasing member held in compression along a longitudinal axis within said expandable member continuously urging said two ends of said expandable member apart along said axis of said biasing member;

a line intersecting said first axis and said second axis, such that when said lid is closed, said line is out of alignment with said biasing member axis and as said lid is opened, said line will first move into alignment with said biasing member axis to compress said biasing member and then will move out of alignment with said biasing member axis so that said lid will be urged upwardly by said biasing member into an open position in engagement with said angled panel.

2. A combination washer/dryer wherein a dryer unit is positioned above a washer unit, a pivotal lid, having a free front edge, being attached to the washer unit and pivotable about a first axis toward the dryer unit, a dryer cabinet having an angled panel below said dryer facing said pivotable lid and a lid retainer mechanism, said lid retainer mechanism comprising:

an arm member secured at one end to said lid;

an expandable cylinder comprising two cylindrical parts nested together, each of said two cylindrical parts having an open end and a closed end, and being nested together at said open ends to form an expandable closed cylinder, said cylinder having a projection at a first end wherein it is pivotally connected to another end of said arm to pivot about a second axis, said cylinder having an elongated cylindrical projection at a second end which is pivotally and slidably received in an aperture in a bracket secured to said cabinet;

a coil spring held in compression within said cylinder continuously urging said two ends of said cylinder apart along an axis of said spring;

a line intersecting said first axis and said second axis, such that when said lid is closed, said line is out of alignment with said spring axis and as said lid is opened, said line will first move into alignment with said spring axis to compress said spring and then will move out of alignment with said spring axis so that said lid will be urged upwardly by said spring into an open position.

3. A combination washer/dryer according to claim 2, including means interconnecting said two cylindrical parts to prevent said parts from inadvertently becoming detached from each other.

4. A combination washer/dryer according to claim 3, wherein said means interconnecting said two cylindrical parts comprises at least one channel formed in one of said cylindrical parts parallel to a longitudinal axis of said expandable cylinder and at least one projecting element carried on said other cylindrical part which projects into said channel.

5. A combination washer/dryer according to claim 4, wherein said means interconnecting said two cylindrical parts comprises a pair of opposed channels formed in an outer of said two nested cylindrical parts and a pair of opposed resilient tongues with outwardly projecting ends formed on an inner of said two nested cylindrical parts, said tongues having a bevelled forward end to assist in insertion of said inner part into said outer part, and a stepped rear side to said projecting end which engages with an end of said channel to prevent excessive elongation of said expandable cylinder.

6. A combination washer/dryer according to claim 2, wherein said lid is biased into engagement with angled panel in said open position.

7. A combination washer/dryer according to claim 2, including removable means for securing said two cylindrical parts together in a compressed state of said expandable cylinder to assist in the assembly of said lid retaining mechanism with said combination washer/dryer.

8. A combination washer/dryer according to claim 2, wherein said arm member is journalled in said cabinet to form a pivot for said lid about said first axis.